/Engine/Source/Runtime/Engine/Public/SceneManagement.h
static [FLightMapInteraction](API\Runtime\Engine\FLightMapInteraction) InitVirtualTexture ( const [ULightMapVirtualTexture2D](API\Runtime\Engine\VT\ULightMapVirtualTexture2D) * VirtualTexture, const FVector4f * InCoefficientScales, const FVector4f * InCoefficientAdds, const FVector2D & InCoordinateScale, const FVector2D & InCoordinateBias, bool bAllowHighQualityLightMaps )